#include "xylophone.h"
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define s second
#define MOD 1000000007
#define flush fflush(stdout)
#define all(x) (x).begin(),(x).end()
using namespace std;
int n,m,T,k;
void solve (int n) {
int ind1;
int l=1;
int r=n;
while (l<=r) {
int mid=(l+r)/2;
int x=query(mid,n);
if (x==n-1) {
ind1=mid;
l=mid+1;
}
else {
r=mid-1;
}
}
int indn;
l=ind1+1;
r=n;
while (l<=r) {
int mid=(l+r)/2;
int x=query(ind1,mid);
if (x==n-1) {
indn=mid;
r=mid-1;
}
else {
l=mid+1;
}
}
vector<bool> fix(n+1,0);
vector<int> arr(n+1,0);
answer(ind1,1);
answer(indn,n);
fix[1]=1;
arr[ind1]=1;
fix[n]=1;
arr[indn]=n;
for (int i=ind1-1; i>=1; i--) {
int x=query(i,i+1);
int val1=arr[i+1]-x;
int val2=arr[i+1]+x;
if (val1<1 || fix[val1]==1) {
arr[i]=val2;
fix[val2]=1;
answer(i,val2);
}
else if (val2>n || fix[val2]==1) {
arr[i]=val1;
fix[val1]=1;
answer(i,val1);
}
else {
int y=query(i,i+2);
int val;
int mx=max(val1,max(arr[i+1],arr[i+2]));
int mn=min(val1,min(arr[i+1],arr[i+2]));
if (mx-mn==y) {
val=val1;
}
else {
val=val2;
}
arr[i]=val;
fix[val]=1;
answer(i,val);
}
}
for (int i=indn-1; i>ind1; i--) {
int x=query(i,i+1);
int val1=arr[i+1]-x;
int val2=arr[i+1]+x;
if (val1<1 || fix[val1]==1) {
arr[i]=val2;
fix[val2]=1;
answer(i,val2);
}
else if (val2>n || fix[val2]==1) {
arr[i]=val1;
fix[val1]=1;
answer(i,val1);
}
else {
int y=query(i,i+2);
int val;
int mx=max(val1,max(arr[i+1],arr[i+2]));
int mn=min(val1,min(arr[i+1],arr[i+2]));
if (mx-mn==y) {
val=val1;
}
else {
val=val2;
}
arr[i]=val;
fix[val]=1;
answer(i,val);
}
}
for (int i=indn+1; i<=n; i++) {
int x=query(i-1,i);
int val1=arr[i-1]-x;
int val2=arr[i-1]+x;
if (val1<1 || fix[val1]==1) {
arr[i]=val2;
fix[val2]=1;
answer(i,val2);
}
else if (val2>n || fix[val2]==1) {
arr[i]=val1;
fix[val1]=1;
answer(i,val1);
}
else {
int y=query(i-2,i);
int val;
int mx=max(val1,max(arr[i-1],arr[i-2]));
int mn=min(val1,min(arr[i-1],arr[i-2]));
if (mx-mn==y) {
val=val1;
}
else {
val=val2;
}
arr[i]=val;
fix[val]=1;
answer(i,val);
}
}
}
Compilation message
xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:29:3: warning: 'ind1' may be used uninitialized in this function [-Wmaybe-uninitialized]
29 | l=ind1+1;
| ~^~~~~~~
xylophone.cpp:138:11: warning: 'indn' may be used uninitialized in this function [-Wmaybe-uninitialized]
138 | for (int i=indn+1; i<=n; i++) {
| ^
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
Output is correct |
| 2 |
Correct |
0 ms |
208 KB |
Output is correct |
| 3 |
Correct |
1 ms |
208 KB |
Output is correct |
| 4 |
Correct |
2 ms |
208 KB |
Output is correct |
| 5 |
Correct |
1 ms |
208 KB |
Output is correct |
| 6 |
Correct |
1 ms |
208 KB |
Output is correct |
| 7 |
Correct |
2 ms |
208 KB |
Output is correct |
| 8 |
Correct |
2 ms |
208 KB |
Output is correct |
| 9 |
Correct |
1 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
288 KB |
Output is correct |
| 11 |
Correct |
1 ms |
208 KB |
Output is correct |
| 12 |
Correct |
1 ms |
208 KB |
Output is correct |
| 13 |
Correct |
2 ms |
208 KB |
Output is correct |
| 14 |
Correct |
1 ms |
208 KB |
Output is correct |
| 15 |
Correct |
1 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
Output is correct |
| 2 |
Correct |
0 ms |
208 KB |
Output is correct |
| 3 |
Correct |
1 ms |
208 KB |
Output is correct |
| 4 |
Correct |
2 ms |
208 KB |
Output is correct |
| 5 |
Correct |
1 ms |
208 KB |
Output is correct |
| 6 |
Correct |
1 ms |
208 KB |
Output is correct |
| 7 |
Correct |
2 ms |
208 KB |
Output is correct |
| 8 |
Correct |
2 ms |
208 KB |
Output is correct |
| 9 |
Correct |
1 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
288 KB |
Output is correct |
| 11 |
Correct |
1 ms |
208 KB |
Output is correct |
| 12 |
Correct |
1 ms |
208 KB |
Output is correct |
| 13 |
Correct |
2 ms |
208 KB |
Output is correct |
| 14 |
Correct |
1 ms |
208 KB |
Output is correct |
| 15 |
Correct |
1 ms |
208 KB |
Output is correct |
| 16 |
Correct |
2 ms |
208 KB |
Output is correct |
| 17 |
Correct |
5 ms |
208 KB |
Output is correct |
| 18 |
Correct |
7 ms |
208 KB |
Output is correct |
| 19 |
Correct |
8 ms |
300 KB |
Output is correct |
| 20 |
Correct |
10 ms |
208 KB |
Output is correct |
| 21 |
Correct |
7 ms |
208 KB |
Output is correct |
| 22 |
Correct |
6 ms |
208 KB |
Output is correct |
| 23 |
Correct |
5 ms |
208 KB |
Output is correct |
| 24 |
Correct |
6 ms |
208 KB |
Output is correct |
| 25 |
Correct |
6 ms |
208 KB |
Output is correct |
| 26 |
Correct |
9 ms |
208 KB |
Output is correct |
| 27 |
Correct |
8 ms |
304 KB |
Output is correct |
| 28 |
Correct |
8 ms |
208 KB |
Output is correct |
| 29 |
Correct |
8 ms |
208 KB |
Output is correct |
| 30 |
Correct |
8 ms |
208 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
208 KB |
Output is correct |
| 2 |
Correct |
0 ms |
208 KB |
Output is correct |
| 3 |
Correct |
1 ms |
208 KB |
Output is correct |
| 4 |
Correct |
2 ms |
208 KB |
Output is correct |
| 5 |
Correct |
1 ms |
208 KB |
Output is correct |
| 6 |
Correct |
1 ms |
208 KB |
Output is correct |
| 7 |
Correct |
2 ms |
208 KB |
Output is correct |
| 8 |
Correct |
2 ms |
208 KB |
Output is correct |
| 9 |
Correct |
1 ms |
208 KB |
Output is correct |
| 10 |
Correct |
1 ms |
288 KB |
Output is correct |
| 11 |
Correct |
1 ms |
208 KB |
Output is correct |
| 12 |
Correct |
1 ms |
208 KB |
Output is correct |
| 13 |
Correct |
2 ms |
208 KB |
Output is correct |
| 14 |
Correct |
1 ms |
208 KB |
Output is correct |
| 15 |
Correct |
1 ms |
208 KB |
Output is correct |
| 16 |
Correct |
2 ms |
208 KB |
Output is correct |
| 17 |
Correct |
5 ms |
208 KB |
Output is correct |
| 18 |
Correct |
7 ms |
208 KB |
Output is correct |
| 19 |
Correct |
8 ms |
300 KB |
Output is correct |
| 20 |
Correct |
10 ms |
208 KB |
Output is correct |
| 21 |
Correct |
7 ms |
208 KB |
Output is correct |
| 22 |
Correct |
6 ms |
208 KB |
Output is correct |
| 23 |
Correct |
5 ms |
208 KB |
Output is correct |
| 24 |
Correct |
6 ms |
208 KB |
Output is correct |
| 25 |
Correct |
6 ms |
208 KB |
Output is correct |
| 26 |
Correct |
9 ms |
208 KB |
Output is correct |
| 27 |
Correct |
8 ms |
304 KB |
Output is correct |
| 28 |
Correct |
8 ms |
208 KB |
Output is correct |
| 29 |
Correct |
8 ms |
208 KB |
Output is correct |
| 30 |
Correct |
8 ms |
208 KB |
Output is correct |
| 31 |
Correct |
16 ms |
208 KB |
Output is correct |
| 32 |
Correct |
24 ms |
228 KB |
Output is correct |
| 33 |
Correct |
35 ms |
292 KB |
Output is correct |
| 34 |
Correct |
40 ms |
208 KB |
Output is correct |
| 35 |
Correct |
40 ms |
208 KB |
Output is correct |
| 36 |
Correct |
34 ms |
208 KB |
Output is correct |
| 37 |
Correct |
39 ms |
208 KB |
Output is correct |
| 38 |
Correct |
22 ms |
208 KB |
Output is correct |
| 39 |
Correct |
41 ms |
208 KB |
Output is correct |
| 40 |
Correct |
39 ms |
208 KB |
Output is correct |
| 41 |
Correct |
39 ms |
292 KB |
Output is correct |
| 42 |
Correct |
30 ms |
208 KB |
Output is correct |
| 43 |
Correct |
36 ms |
208 KB |
Output is correct |
| 44 |
Correct |
32 ms |
208 KB |
Output is correct |
| 45 |
Correct |
40 ms |
208 KB |
Output is correct |
| 46 |
Correct |
36 ms |
208 KB |
Output is correct |
| 47 |
Correct |
42 ms |
208 KB |
Output is correct |
| 48 |
Correct |
45 ms |
208 KB |
Output is correct |
| 49 |
Correct |
40 ms |
208 KB |
Output is correct |
| 50 |
Correct |
38 ms |
292 KB |
Output is correct |
| 51 |
Correct |
41 ms |
208 KB |
Output is correct |
| 52 |
Correct |
39 ms |
208 KB |
Output is correct |
| 53 |
Correct |
38 ms |
288 KB |
Output is correct |
| 54 |
Correct |
38 ms |
208 KB |
Output is correct |
| 55 |
Correct |
39 ms |
300 KB |
Output is correct |
| 56 |
Correct |
31 ms |
208 KB |
Output is correct |
| 57 |
Correct |
38 ms |
208 KB |
Output is correct |
| 58 |
Correct |
39 ms |
208 KB |
Output is correct |
| 59 |
Correct |
40 ms |
208 KB |
Output is correct |
| 60 |
Correct |
54 ms |
208 KB |
Output is correct |
